On Friday, Facebook debuted its new flagging system for fake news in America, tagging hoax stories as “disputed” for some users.

First announced amid criticism of the company for its role in spreading misinformation during the 2016 election, the new feature uses non-partisan third parties to assess the factual accuracy of stories reported as fake by users.

A team of engineers led by 94-year-old John Goodenough, professor in the Cockrell School of Engineering at The University of Texas at Austin and co-inventor of the lithium-ion battery, has developed the first all-solid-state battery cells.

These could lead to safer, faster-charging, longer-lasting rechargeable batteries for handheld mobile devices, electric cars and stationary energy storage.

The latest breakthrough is a low-cost all-solid-state battery that is non-combustible and has a long cycle life (battery life) with a high volumetric energy density and fast rates of charge and discharge.

Cobalt Robotics has announced an autonomous mobile robot designed for indoor security applications that can “work alongside human guards to provide better security than people can do alone.”

The key realization here is that security guards spend the vast majority of their time doing almost nothing.

Even in a worst-case scenario (like someone trying to break in, or a fire or other serious problem), their primary responsibility is making the right phone call as quickly as possible as opposed to dealing with the situation directly.

In general, a security guard needs to be able to walk around a building checking on things, occasionally interact with humans in a limited capacity.

But most importantly they need to notice if anything unusual is going on and tell someone about it, and this robot is designed to help do just that.